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Light-weight EVA (ethylene-vinyl acetate) shoe sole material and preparation method thereof

A sole material and lightweight technology, applied in the field of sole material and lightweight EVA (ethylene-vinyl acetate copolymer) sole material, can solve the problems of sole weight and high foaming, and achieve the effect of reducing its own weight

Active Publication Date: 2014-07-30
NANJING DONGYA RUBBER & PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

EVA soles usually need to add various additives during the preparation process to achieve high foaming, but at the same time the sole itself becomes heavier

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Prepare the raw materials of the following components by weight and send them to the internal mixer for internal mixing:

[0034] EVA7350 40 copies;

[0035] 20 parts of lightweight silica filler;

[0036] 5 parts of POE8003 colloidal particles;

[0037] 5 parts of industrial light powder;

[0038] Foaming agent 1 part;

[0039] 0.2 parts of coupling agent;

[0040] 0.5 parts of zinc oxide powder;

[0041] 0.3 parts of stearic acid,

[0042] The temperature of the internal mixer is controlled at 90°C, the air pressure is 0.7kg, and the internal mixing time is 5 minutes; the materials after internal mixing are sent to the open mixer to start mixing, the opening temperature is 75°C, 15mm2 times, 1mm2 times; After the material obtained is granulated, the granulation temperature is 75 ° C; cooling for 6 hours; after the cooling is completed, the material is foamed, the temperature of the foaming machine is 165 ° C, the pressure is 160 kg, and the foaming t...

Embodiment 2

[0043] Example 2: Prepare the raw materials of the following components by weight and send them to the internal mixer for internal mixing:

[0044] EVA7350 60 copies;

[0045] 40 parts of light silica filler;

[0046] 15 parts of POE8003 colloidal particles;

[0047] 15 parts of industrial light powder;

[0048] Foaming agent 5 parts;

[0049] 0.6 parts of coupling agent;

[0050] 1.5 parts of zinc oxide powder;

[0051] 0.7 parts of stearic acid,

[0052] The temperature of the internal mixer is controlled at 100°C, the air pressure is 0.8kg, and the internal mixing time is 9 minutes; the materials after internal mixing are sent to the open mixer to start refining, the opening temperature is 85°C, 15mm2 times, 1mm2 times; The obtained material is granulated at a granulation temperature of 80°C; cooled for 6 hours; after the cooling is completed, the material is foamed, the temperature of the foaming machine is 170°C, the pressure is 180kg, and the foaming time is 9 mi...

Embodiment 3

[0053] Example 3: Prepare the raw materials of the following components by weight and send them to the internal mixer for internal mixing:

[0054] EVA7350 50 copies;

[0055] 30 parts of light silica filler;

[0056] 10 parts of POE8003 colloidal particles;

[0057] 10 parts of industrial light powder;

[0058] 3 parts foaming agent;

[0059]0.4 parts of coupling agent;

[0060] Zinc oxide powder 1 part;

[0061] 0.5 parts of stearic acid,

[0062] The temperature of the internal mixer is controlled at 95°C, the air pressure is 0.7kg, and the internal mixing time is 7 minutes; the materials after internal mixing are sent to the open mixer to start refining, the temperature is 80°C, 15mm2 times, 1mm2 times; After the material obtained is granulated, the granulation temperature is 80°C; cooling for 6 hours; after the cooling is completed, the material is foamed, the temperature of the foaming machine is 170°C, the pressure is 170kg, and the foaming time is 7 minutes to ...

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PUM

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Abstract

The invention discloses a light-weight EVA (ethylene-vinyl acetate) shoe sole material and a preparation method thereof. The material comprises the following components in parts by weight: 40-60 parts of EVA 7350, 20-40 parts of white carbon black, 5-15 parts of POE (polyolefin elastomer) 8003 rubber particle, 5-15 parts of industrial calomel, 1-5 parts of foaming agent, 0.2-0.6 part of coupling agent, 0.5-1.5 parts of zinc white and 0.3-0.7 part of stearic acid. The preparation method comprises the following steps: banburying, open milling, granulating, cooling, foaming and the like. The shoe sole material disclosed by the invention has the comfort and elasticity of the shoe sole made of the EVA foamed material; and the light-weight material, calomel and other additives are added into the EVA matrix and subjected to foaming to effectively reduce the weight of the material, so that the material is lighter to wear.

Description

technical field [0001] The invention relates to the field of shoe sole materials, in particular to the field of lightweight EVA (ethylene-vinyl acetate copolymer) shoe sole materials. Background technique [0002] EVA material is widely used in shoe sole manufacturing industry due to its good flexibility and wear resistance. EVA soles usually need to add various additives in the preparation process to achieve high foaming and other purposes, but at the same time the sole itself becomes heavier. [0003] People have higher and higher requirements on the lightness and comfort of sole materials, especially the sole materials of sports shoes. Contents of the invention [0004] Purpose of the invention: the purpose of the present invention is to address the deficiencies in the prior art, providing a kind of lightweight EVA shoe sole material that is comfortable to wear, light and soft, and a preparation method thereof. [0005] Technical solution: the lightweight EVA shoe mat...

Claims

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Application Information

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IPC IPC(8): C08L23/08A43B13/04C08K13/02C08K3/36C08K3/22C08K5/09C08J9/04B29B9/00B29B7/74B29C44/00
CPCA43B13/04C08L23/0853B29B7/74B29B9/00B29C44/00C08L2203/14C08L23/0815C08K13/02C08K3/36C08K2003/2296C08K5/09B29B7/183B29B7/823B29B7/286B29B7/88B29B7/005B29B7/7495
Inventor 葛胜超
Owner NANJING DONGYA RUBBER & PLASTICS
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